/*
 * Copyright 2008 The Apache Software Foundation
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.mybatis.generator.plugins;

import static org.mybatis.generator.internal.util.StringUtility.stringHasValue;
import static org.mybatis.generator.internal.util.messages.Messages.getString;

import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.mybatis.generator.api.PluginAdapter;
import org.mybatis.generator.api.IntrospectedTable;

/**
 * This plugin demonstrates overriding the initialized() method to rename the
 * generated example classes. Instead of xxxExample, the classes will be named
 * xxxCriteria
 * This plugin accepts two properties:
 * <ul>
 * <li><tt>searchString</tt> (required) the regular expression of the name
 * search.</li>
 * <li><tt>replaceString</tt> (required) the replacement String.</li>
 * </ul>
 * For example, to change the name of the generated Example classes from
 * xxxExample to xxxCriteria, specify the following:
 * <dl>
 * <dt>searchString</dt>
 * <dd>Example$</dd>
 * <dt>replaceString</dt>
 * <dd>Criteria</dd>
 * </dl>
 * 
 * @author Jeff Butler
 */
public class RenameExampleClassPlugin extends PluginAdapter
{
    private String  searchString;
    private String  replaceString;
    private Pattern pattern;
    
    /**
     * 
     */
    public RenameExampleClassPlugin()
    {
    }
    
    public boolean validate(List<String> warnings)
    {
        
        searchString = properties.getProperty("searchString"); //$NON-NLS-1$
        replaceString = properties.getProperty("replaceString"); //$NON-NLS-1$
        
        boolean valid = stringHasValue(searchString) && stringHasValue(replaceString);
        
        if (valid) {
            pattern = Pattern.compile(searchString);
        }
        else {
            if (!stringHasValue(searchString)) {
                warnings.add(getString("ValidationError.18", //$NON-NLS-1$
                    "RenameExampleClassPlugin", //$NON-NLS-1$
                    "searchString")); //$NON-NLS-1$
            }
            if (!stringHasValue(replaceString)) {
                warnings.add(getString("ValidationError.18", //$NON-NLS-1$
                    "RenameExampleClassPlugin", //$NON-NLS-1$
                    "replaceString")); //$NON-NLS-1$
            }
        }
        
        return valid;
    }
    
    @Override
    public void initialized(IntrospectedTable introspectedTable)
    {
        String oldType = introspectedTable.getExampleType();
        Matcher matcher = pattern.matcher(oldType);
        oldType = matcher.replaceAll(replaceString);
        
        introspectedTable.setExampleType(oldType);
    }
}
